Welterweight Jayar Inson and flyweight Genisis Libranza make their U.S. debuts on the big stage as part of the non-televised undercard headlined their fellow Filipino countryman Manny Pacquiao on Saturday, January 19 at the MGM Grand Garden Arena in Las Vegas.

In the main event, Pacquiao,boxing’s only eight-division world champion, will end his two-year hiatus from a U.S. boxing ring when he returns to Las Vegas to defend his World Boxing Association Welterweight World Title against former four-division world champion and must-see attraction Adrien “The Problem” Broner on SHOWTIME PPV®.

Tickets for the event, which is promoted by MP Promotions, Mayweather Promotions and TGB Promotions in association with About Billions Promotions, are on sale now and start at $100, not including applicable service charges, and can be purchased on line through AXS.com, charge by phone at 866-740-7711 or in person at any MGM Resorts International box office.

The pay-per-view undercard will see two-division world champion Badou Jack will battle unbeaten top-rated contender Marcus Browne for the WBA Interim Light Heavyweight Title and former world champion Rau’shee Warren taking on France’s Nordine Oubaali for the vacant WBC Bantamweight World Championship in a rematch of their 2012 Olympic matchup that was edged by Oubaali. In the opening bout of the four-fight PPV telecast, unbeaten Jhack Tepora will take on former world champion Hugo Ruiz in a 12-round featherweight clash.

On May 25, 1964, Muhammad Ali knocked out Sonny Liston in the first round of their rematch in Lewiston, Maine. Ali landed a single right-hand counter, called the anchor punch, to knock Liston out. Rumors abounded regarding the ending as many believed Liston could have gotten up. With the win, Ali retained his world heavyweight title.